Optimize Unbuffered Shapes

[einarf]

Unbuffered shapes (draw_<shape>) needs some serious optimizing. This will tie in with the ShapeElementList later.

• Line
• Lines
• Circle
• Rectangle
• Arc
• Parabola
• Line Strip
• Polygon
• Triangle

[einarf]

I'm just closing this for now. The remaining methods are not terribly slow and are used way less. We'll also have access to pyglet shapes in 2.7